Four-way valve



(No Model.) 7 2 Sheets-Sheet 1.

W. RYMER.

FOUR WAY VALVE.

No. 477,706. Patented June 28, 1892.

gfi fiooeo W V I f avw w oz $51? Guam? 2 Sheets-Sheet 2.

(N0 Model W RYMER POU WAY VALVE. Patented June 28, 1892.

avwemtoz 55 4 whammy Nrrnn STATES PATENT OFFICE.

WVILLIAM RYMER, OF DETROIT, MICHIGAN.

FO U R-WAY VALVE.

SPECIFICATION forming part of Letters Patent No. 477,706, dated Tune 28,189

Application filed March 26, 1891. Serial No. 386,477. (No model.)

T0 aZZ whom it may concern:

Be it known that I, WILLIAM RYMER, a citizen of the United States,residing at Detroit, county of WVayne, State of Michigan, have inventeda certain new and useful Improvement in a Four-VVay Valve; and I declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, which form a part of this specification.

My invention relates to certain new and useful improvements in afour-way valve; and it consists of the devices and applianceshereinafter specified and claimed, and illustrated in the accompanyingdrawings, in which- Figure l is a plan view embodying my invention. Fig.2 is a vertical section of the same on the line :0 00, Fig. 1. Fig. 3 isa plan view of the face of the valve. Fig. 4B is a plan view of thevalve-seat. Fig. 5 is a detail view in plan showing the valve in acertain position relative to the valve-seat. Fig.6 is a similar viewshowing the valve in a position to admit the power-supply to the pipe0'. Fig. 7 is a vertical section through the valvehead and valve-seat atright angles to that shown in Fig.2, and Fig. 8 is a plan View showingthe position of the valve when admitting power to the pipe 0.

My invention, while designed for any use to which it may be foundadapted, is especially applicable in connection with a certain steeringapparatus for which Letters Patent were granted to me by the UnitedStates March 17, 1891, No. 44,55,263, in which two power-conductingpipes are communicable with each other by means of a controllingvalve,an additional pipe leading from the power-supply, and an exhaust orrelief pipe being also communicable with the valve. The drawings andspecifications herewith explain the construction of myimproved valve ineo11- nection with such a mechanism,

Accordingly A represents a valve-case provided with a rotatable andreciprocatory valve A and a valve-seat A The valve A is engaged with astem A projecting through the cap A The valve-stem may be provided withan operating handle or lever A.

spring B is located between the valve A and cap A The valve-case A isconstructed with a chamber above the valve, as shown in Fig. 2, toreceive said spring, and within which the valve may reciprocate. Thestem may be engaged with the valve in any suitable manner. valve-caseare two power-conducting pipes C and C, also a supply-pipe O and anexhaust or relief pipe C The two pipes G and C may each be provided witha pressure-gage connection D.

The valve-seat, it will be observed by reference particularly to Fig. 4,is constructed with an admission port a, communicating with the pipe 0and an outlet-port a, communicating with the pipe 0 also with a port ocommunicating with the pipe 0, and a port a communicating with the pipe0.

The valve A is constructed on its under surface with ports a a a port0,, opening through the valve into the valve-case, and a closed port aThe ports a a a do not communicate through the head of the valve intothe case A, but the ports a 0. are connected by a channel a in the underside of the valve.

It will be seen that in the position ot the valve shown in Fig. 2 thepower in the pipes O C is in equilibrium, the ports a a and a a beiu gin coincidence. In this case the valve is located to correspond with theposition indicated in Fig. 5, in which it will be observed thevalve-ports a a lap the ports a a of the valveseat, bringing the openport a of the valve over the port a of the valve-seat and the closedport a of the valve over the port a of the valve-seat, cutting oil thepower-supply and opening the valve-case to the exhaustpipe 0 In Fig. 6the valve is shown turned into position to admit the power-supplyentering through the pipe G into the conducting-pipe C. In this case theport a of the valve laps the ports a and a of the valve-seat, therebyaffording communication from pipe 0 to pipe C". In this position it willbe seen the port a of the valve laps the ports a and a, allowing thepipe 0 to exhaust through the pipe 0 As shown in Fig. 8, the pipe (3communicates with the pipe 0. When the valve is ad justed for thispurpose, it will be seen the valve-port of laps the ports a a of thevalvc- Communicating with the base of the Ioo seat. The port a of thevalve also laps the ports a and a of the valve-seat, allowing the pipe 0to exhaust. This adjustment of the valve may be made by turning thevalve from the position indicated in Fig. 6 in the direction of thearrow to the position shown in Fig. 8.

These various illustrations and descriptions of different positions ofthe valve to accomplish desired results will give a clear understandingof the construction and operation of the valve.

Between the various ports of the valve and valve-seat, respectively, itwill be understood, each is constructed with separating-bridges, asshown.

The valve is constructed with an annular shoulder A having a bearing ina socket A in the valve-seat.

It will be observed that the construction of the valve is such as torender it a safetyvalve, inasmuch as the tension of the spring seats thevalve under normal pressure;,but should the pressure through thepower-supply pipe become greater than the tension of the spring thevalve would be lifted by said pressure from its seat, allowing thepressure to reduce, when the spring will again seat the valve.

By means of a spring E, engaged with the lever A, the lever can be heldindesired position, the spring having a bearing upon the upper rim ofthe valve-case, which may be recessed, as desired, to hold the spring inproper position, as shown in Fig. 1. A valve so constructed overcomesall liability of leakage.

WVhat I claim as my invention is 1. A four-way valve consisting of avalvecase provided with a valve-seat having in combination therewith arotatable valve located upon the seat, said seat constructed with portsa a a a and said valve with ports a a a a and two of said valve-ports aand a each being large enough to communicate with two of the seat-portsat the same time, and the remaining two a and a not beinglarge enough tocommunicate with two of the seat-ports at the same time, and a channelin the valve connecting the ports a and a, substantially as described.

2. A four-way valve consisting of a valvecase provided with a valve-seathaving in combination therewith pipes O C O ports communicating throughsaid seat with said pipes, a rotatable and reciprocating valve locatedupon said seat and constructed with ports a a a M, and a channel aconnecting the ports a and a two of said valve-ports being large enoughto communicate with two of the seat-ports at the same time and the othertwo being of the same size as the seatports, the large and the smallports of the valve alternating with each other respectively,substantially as described.

3. A four-way valve consisting of a valvecase provided with a valve-seathaving in combination therewith a rotatable and reciprocatory valvelocated upon said valve-seat. said seat being constructed with ports a,a, a and a and the valve with ports a, a, a and a and a channel aconnecting the ports a and a said case forming a chamber above the valvewithin which the valve may reciprocate, two of said ports a and a eachbeing large enough to communicate with two of the seatports at the sametime and one of them a extending through the valve, wherebycommunication is established with the interior of the chamber andback-pressure is overcome, and a spring within-the chamber pressingagainst the top of the valve, substantially as described.

4. A fou r-way valve consisting of a case provided with a valve-seat andhaving its upper rim recessed, said case having in combination therewitha valve and valve-stem projecting through said case, a lever secured tothe stem, and a spring secured to the lever, the lower end of which isadapted to engage with the recesses of the rim of the case for holdingthe valve in a desired position, said seat being provided with ports a,a, a and a and the valve being provided with communicating ports a and aand withports o and a substantially as described.

In testimony whereof I sign this specification in the presence of twowitnesses.

VILLIAM RYMER.

Witnesses:

N. S. WRIGHT, JOHN F. MILLER.

